[Using my wife's account. My 2-factor authentication is out]
I do not speak any Korean, but when we had an engineer from Korea visit my department, I was asked to 'translate' for him . . . when he was speaking English! My ability to decipher his accented English was called into play as we worked out a collaborative project.

At some point, the advancing surface of the ball of tribbles will be traveling at the speed of light. Before the, though, the gravitational pull of all those tribbles would make the ones in the core begin to undergo nuclear fusion. The energy would cause an explosion, but if the mass of tribbles is high enough, the explosion might be contained, creating a tribble-fueled star.